Window ventilator



Nov. 3, 1953 A. E. WITTENBERG WINDOW VENTILATOR 2 Sheets-Sheet l Filed Oct. l, 1948 /MW//M'y Nov. 3, 1953 A. E. WITTENBERG 2,657,624

wINDow VENTILATOR Filed oct. 1, 1945 2 sheets-sheet 2 AR THUi"l EDWARD Wl T TENBERG IN V EN TOR.

nues/VER, BEL-HL ER, Wonne/ HERZ/c a CALDWELL,

A 7' TORNEKS.

Patented Nov. 3, 1953 UNITED f ,STAT-ES PATIELNT F F ICEv VENTILATOR -Artliiir wad Wittenberg, Los Angeles, Calif. Applicationoctober 1, 1948, Serial No. 52,225

somme. (Cines-99.2)

f 1, v vThis invention relates [to ,window `ven i'.ilators and1more. particularlyfto a window ventilator adapted `for universal use upon double-hung windows or theglikejthe construction'beingcliaracterized.l as muchas' possible by d'ra-ftless :design Yfor controlled ventilation.

It fis, intended by` theQi-nstant construction, to ,provide awindowventilator directed Cto there,- moval of vair-borne `iilth such as du'jslt, soot, cinders and thelike, .aswell as Asmokeand' rain, and which is substantially'draft-free.

It isalsointendedto provide a. window ventilator of the'desirel character described which is usable with equal tfacility upon trains, =streetjcars, buses and subways, or homes and o ices, and otherwise,universallywhere doublehungwindows are found.

Among -thefobjectsfof this ,invention is the provision'of a window, ventilator of improved collapsible constructionl y It is another object of this invention to provide a windowventilatorfwhose,panels are .composed of transparenter other vlight-tran'smitting.,inaterial, preferably .such as lwill alsotransmit ultraviolet rays. f

Another object ofthe .invention is the provision of removable,andfreplweablepanels, Gvrpris'ig the framework of the Cventilator.

Another further object of, tl 1e Yinvention the provision of an improyed ventilator construction adapted to `he optionally formed with a Vv wootlpr meta1 Vframework, or totally or partially moulded fromplastic in complete Apanels andsections,

Another object jof -,the invention isto provide a novel folding relationship` of the parts,. ar novel l and improved g hinge constructionl and an proved arrangement of Vthe parts with relationship to each other and toa Windowandframe to which it is to loe-applied.`

Another object of the `invention is theprovision of` a window ventilator of sturdyoonstruction and neat and pleasing ;design,vthe amount Of air passing through the samebeingsubject ,to control by raising and lowering of the windowv without-disturbing the ventilator-,1

2. 'venian consists inftefcqnstrucion, arrangement and combination of the various parts of the 4device whereby the objects contemplated are attained, as hereinafter set forth, pointedout in the appended claims, and illustrated. in theiac- 'c'ompanying drawings.

In the drawings; Figure 1 vis 'a perspective View of a Window ventilator embodying this invention as applied to a double-hung window. Figure 2 `isfa,sectionaLview.taken as on ajline ZV1-,Lof Figurel. v

Figure 3 is 'a fragmental sectional view taken vason a line 3 -3 ofFigure2..

Figureflis a sectional Viewtaken as on a line 4T4 of Figure 1.

Figure 5 is a side view in elevation of a folded condition of the ventilator.V

Figure Gisa sectional view of a modified hinge 'construction vas for afirameof sheet metal orlthe 0f whose .partsare interchangeable: andewhich t i tion principles` as well details oi design.

. Withtheseiand other objects inview, the.: i1!- Referring:moregparticularly 'to the drawings, a'ventilat'or `generally n designated by the numeral Illis illustrated byfwayof example, and not of limitation, within a window frame II jmounting grooue I9A The top'lpanel, forjexample, maybe undercut .as at ,20pef1mit downward'foldihg of thesame as `will be seen,

The rear panel maybe, pvvtally secured ,as by a hinge 2I tothe bottom Itand may vbe similarly undercut as at 22 to permit the inward vand 'forward folding ofthe backpanel IE.- Again, the

Side panels I'I-'inay be hinged as at 24, a male portion u2li of such-hinge-bing preferablyeformed integrally with each panehespeciallyif the latter `be made-pbplastic orrthelike-material. rSaid male-member ispreferably. offset as atZI` from the planeof eitherside panel in orderthat these may ,be freeto swing inwardlyin the, folded position ofthe Ventilator. Toy accommodate a rearmost edge 28 of the side panels intheiru-nfolded position,- thegrear,panelgnay-:be formedwith vertical'channels 2 1,y

Thefront panelmay. beprovidedwith an opening, .'lIJ.` and. groove 3 I formed therearound for;thelslidableinsertionthrough slot 32 of a 3 glass or plastic pane 33 from one end of the ventilator.

The top panel may be channeled as at 34 for the securement of a frame 35 holding a screen 36 made of plastic, wire or the like.

Similarly, the rear panel may be formed with a frame 31 carrying a screen 38 and normally held within a corresponding recess 39 in the back panel.

Lateral extensions 40 provided for either end of the back panel may be telescoped or otherwise slidably associated with the same as by means of longitudinal channels 4l formed in the back panel. Said extensions may be of any desired thickness but preferably suicient to extend back to the rearmost edge 42 of the back panel and include narrow flanges or feather-like edges 43.

In use, this ventilator may be positioned as upon a window sill 45 with the rearmost edge 42 in alignment with the inner edge of the window I2 so that the window may have slidable engagement with the back side and hence be closable to any desired extent. As commonly used the Window is opened, in a manner illustrated in Figure 1, to a position corresponding with the height of the ventilator screen 38. The lateral cxtesions 40 are positioned within the space between the window and its conventional guides 45.

In order to fold the device as for transport, the lateral extensions 40 may be telescoped inwardly flush with the side panels I1. The rear panel may then be folded forwardly and the top panel downwardly.

A downwardly projecting flange 41 on the top panel may extend beyond the back panel in order to hold the same forwardly and against the rearmost edge 28 of the side panels, thereby stabilizing and reinforcing the apparatus in its unfolded position. It will be noted that in order to unfold the apparatus, the back panel must be swung rearwardly to a sufficient extent to permit the side panels to be brought within the grooves 21. Accordingly, the flange 41 will have to be cleared by the rear panel. For such purpose, the hinges I8 and 2| may have chamfered edges 48 and 49 providing sufficient play for forward and rearward movement. The side panels are nested at top, as indicated at 49', in a channel and against a shoulder 50 of the bottom I5.

Thus, all parts of the ventilator are protected against leaks and drafts so that in the event the same is placed in close proximity to a person, no annoyance will be encountered.

In View of the downward and rearward slant of the upper panel, the front panel is higher than any other part of the ventilator, permitting a greater amount of deection and requiring the entrant air to pass upwardly and rearwardly through the screen 36 at an angle. Although the entering air is not thereby impeded, suspened particles will tend to be separated. Moreover, the shape of the internal structure is such that some turbulence and whirling of the air is created, causing further separation and increasing eiciency in the elimination of foreign matter.

It has been found that a proper proportioning of the structure illustrated is obtained when the front panel rises approximately three inches above the rear panel.

With the instant construction, approximately ten percent of dust and soot is separated at the first screen. After passing through the uppermost screen 36, all but approximately ten percent of dust and smoke is eliminated. Substantially 4 all rain, cinders and other such matter is stopped at the second screen.

In the event sheet metal is used for the general frame, a scroll-type hinge, seen in cross-section in Figure 5, is preferred in lieu of the hinges of Figures 1 through 4. Thus, the top 5| may be formed with a scroll-type edge 52 to intert with a similar edge 53 on the back front panel 54, for example.

This invention features the provision of a ventilator which can be adapted to windows of varying width, which may be folded for transport, which is constructed to prevent leakage of air, and whose slanted portions cause a desired turbulence and change of air direction necessary to achieve an optimum air-cleansing and ventilating effect with controlled, draft-free ventilation. The invention also features the induction or control of ventilation either where the air is normally in motion, as in buses, or in otherwise close or foul areas, provides insurance against draft, and fosters healthful ventilation without exclusion of light rays including ultra-violet rays.

Although the invention has been herein shown and described in what is conceived to be the most practical and preferred embodiment, it is recognized that departures may be made therefrom within the scope of the invention, which is not to be limited to the details disclosed herein but is to be accorded the full scope of the claims so as to embrace any and all equivalent structures.

The invention having been herein described, what I claim as new and desire to secure by Letters Patent is:

l. A ventilator for double-hung windows comprising an essentially box-like frame defining top, front, end, bottom and back panels, wherein the back and top panels respectively have apertures to admit the free passage of air, the top panel having a longitudinal continuous hinged connection to the front panel, the back panel having a longitudinal continuous hinged connection to the bottom panel and the end panels respectively having longitudinal continuous hinged connections to the front panel, said hinged connections being swingable inwardly whereby the top panel may be folded downwardly, the end panels inwardly and the rear panel forwardly to render the ventilator compact, said hinged connections comprising interfltting cylinder-like longitudinal channels and tongues formed in said panels for air-tight relative foldable movement of said panels, slidable lateral extensions at either side of the ventilator having telescoping connections with the back panel for engagement in window channels normally provided at either side of a double-hung window, vertical grooves formed in the back panel for reception of the rearmost edges of the side panels, and a downwardly directed lip on the top panel engageable with the back panel in the unfolded position of the ventilator for retaining the rearmost edges of the side panels firmly within said vertical grooves.

2. A ventilator as characterized in claim 1 in Which said lateral extensions include a thin vertical outer edge adapted to be slipped between the double-hung window and its channels in a manner to permit the window to be opened to any desired extent without hindrance by said thin outer edges.

3. A portable unitary ventilator for doublehung windows comprising an essentially box-like frame defining top, front, end, bottom and back panels, the top panel having a longitudinal continuous hinged connection to the front panel, the back panel having a longitudinal continuous hinged connection to the bottom panel and the end panels respectively having longitudinal continuous hinged connections to the front panel, said hinged connections being swingable inwardly, the panel at one side of the hinged connection in each case being formed with a continuous tongue and the panel at the other side of the hinged connection with a continuous groove adapted to receive the tongue, said hinged connections being foldable inwardly whereby the top panel may be folded downwardly, the end panels inwardly and the back panel forwardly to render the ventilator compact, the top and back panels comprising screens.

4. A ventilator as characterized in claim 3, in which the front panel is higher than the back panel and the side panels have an upper edge slanting upwardly between the top of the back panel and the top of the front panel.

5. A ventilator for double-hung windows comprising an essentially box-like frame defining top, front, end, bottom and back panels, the top, back and end panels being foldable relative to the front and bottom panels, and formed with 6 continuous hinges in common therewith whereby the top panel may be folded downwardly, the end panels inwardly and the rear panel forwardly to render the ventilator compact, said hinges comprising interlitting cylinder-like longitudinal channels and tongues formed in said panels for airtight relative foldable movement of said panels, said longitudinal intertting channels being scroll-like.

ARTHUR EDWARD WIT'IENBERG.

References Cited in the le of this patent UNITED STATES PATENTS Number Name Date 362,051 Addorns May 3, 1887 443,345 Aikins -Dec. 23, 1890 983,958 Tuerk et al. Feb 14, 1911 1,164,755 Rouse Dec. 21, 1915 1,256,452 Evans Feb. 12, 1918 1,693,442 Henritzy Nov. 27, 1928 1,949,877 Poole Mar. 6, 1934 FOREIGN PATENTS Number Country Date 10,005 Great Britain May 12, 1905 

